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Dissertations / Theses on the topic 'Sockeye salmon Sockeye salmon'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Hamon, Troy R. "The role of natural and sexual selection in local adaptation of spawning behavior and morphology in sockeye salmon, Oncorhynchus nerka /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5379.

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2

Hendry, Andrew Paul. "Reproductive energetics of Pacific salmon : strategies, tactics, and trade-offs /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5346.

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3

Woody, Carol Ann. "Ecological, morphological, genetic, and life history comparison of two sockeye salmon populations, Tustumena Lake, Alaska /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5398.

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4

Carlson, Stephanie Marie. "The evolutionary effects of bear predation on salmon life history and morphology /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5338.

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5

Hyun, Saang-Yoon. "Inseason forecasts of sockeye salmon returns to the Bristol Bay districts of Alaska /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/6363.

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6

Marsden, Allan Dale. "Bioeconomics of Fraser River sockeye salmon fisheries." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43766.

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Sockeye salmon (Oncorhynchus nerka) in the Fraser River are immensely important to British Columbia's culture and economy. Despite centuries of exploitation and decades of intensive study there remain several key uncertainties about the biological system, including those around dramatic four-year cycles of abundance and pre-season projections of how many fish will return in a given year. Recent years have seen declines in the productivity of some stocks as well as broader conservation concerns, leading to closure of some commercial fisheries, and it appears that greater economic beneﬁts may on

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7

Plate, Elmar. "Olfactory imprinting in sockeye salmon (Oncorhynchus nerka)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ58578.pdf.

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8

Linley, Timothy James. "Patterns of life history variation among sockeye salmon (Oncorhynchus nerka) in the Fraser River, British Columbia /." Thesis, Connect to this title online; UW restricted, 1993. http://hdl.handle.net/1773/5280.

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9

Hill, Aaron C. "Sedimentary legacy of sockeye salmon (oncorhynchus nerka) and climate change in an ultra-oligotrophic, glacially-turbid British Columbia nursery lake." CONNECT TO THIS TITLE ONLINE, 2007. http://etd.lib.umt.edu/theses/available/etd-05312007-075732/.

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10

Smith, Meaghan K. "Immune Changes in the Anterior Kidney of Spawning Sockeye Salmon." W&M ScholarWorks, 2018. https://scholarworks.wm.edu/etd/1550154011.

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During the return journey to their spawning grounds, sockeye salmon are exposed to various pathogens and undergo major endocrine changes. Little is known about how these changes affect their immune system. The immune system of salmon is similar to mammals; myeloid lineage cells provide the first response to infection and B lineage cells protect against specific pathogens. After activation by pathogen, B cells may differentiate into long-lived plasma cells (LLPCs) in the anterior kidney, where they can survive for years, continuously secreting protective antibody. This research focused on s

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11

Crossin, Glenn Terrence. "Factors affecting the timing and success of sockeye salmon spawning migrations." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/995.

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Migration timing is a conserved life-history trait. To address the hypothesis that reproductive hormones are principal determinants of migration timing, I physiologically biopsied over 1000 sockeye salmon and monitored their subsequent behaviour with acoustic and radio telemetry as they migrated from the Pacific Ocean toward and into the Fraser River, and then onward to distant spawning areas. Links between physiology, behaviour, and survival were examined. Circulating testosterone was found to be positively correlated with the rates of river entry in Late-run females but not in males, despit

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12

Chappell, Maxwell Elliott. "Differences in Sockeye Salmon Antibody Composition: Testing The Immunological Imprinting Hypothesis." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1477068424.

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Anadromous fish such as sockeye salmon return to their natal streams to spawn, during which they undergo significant physiological changes including the release of cortisol, a known immunosuppressive hormone. Our lab has proposed the Immunological Imprinting Hypothesis, which suggests that juvenile anadromous fish respond to pathogens specific to their natal site by producing protective long lived plasma cells (LLPCs) that constitutively produce antibodies against those pathogens. These LLPCs are believed to be highly cortisol resistant. Thus, fish returning to their natal streams have immunol

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13

Eliason, Parsons Erika Jennifer. "Cardiorespiratory physiology and temperature tolerance among populations of sockeye salmon (Oncorhynchus nerka)." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/37013.

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Elevated summer water temperature has been associated with high mortality in adult sockeye salmon (Oncorhynchus nerka) during their once-in-a-lifetime migration up the Fraser River (British Columbia, Canada) to their spawning grounds. There are over 100 genetically distinct populations of sockeye salmon in the Fraser River watershed, varying in migration distance, elevation gain, river temperature and river flow. This thesis studied the physiological basis for temperature tolerance in sockeye salmon and examined the overall hypothesis that each sockeye salmon population has physiologically ada

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14

Rechisky, Erin Leanne. "Migration and survival of juvenile spring Chinook salmon and sockeye salmon determined by a large-scale telemetry array." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/23349.

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This thesis documents the use a large-scale acoustic telemetry array to track hatchery-reared salmon smolts during their seaward migration, presents estimates of early marine survival, and describes migration behaviour in the ocean of two species of Pacific salmon from the Columbia and Fraser River basins. In the Columbia River basin, it is hypothesized that seaward migrating Snake River spring Chinook salmon suffer from “delayed mortality” due to passage through eight hydropower dams or “differential delayed mortality” from transportation via barge around the dams. I tested these hypotheses

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15

Tolson, Graeme M. "Locomotor responses of juvenile and adult sockeye salmon (Oncorhynchus nerka) to acute changes in temperature and salinity." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28350.

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The locomotor responses of juvenile and adult sockeye salmon (Oncorhynchus nerka) to concurrent changes in temperature and salinity were examined in a controlled laboratory setting. I hoped to better understand how these environmental factors influence the coastal movements of migrating salmon. Juvenile sockeye were captured during the downstream migration from Great Central Lake on Vancouver Island, British Columbia, Canada. The fish were acclimated for 1 wk at 10°C, 20 ppt, and then tested in annular activity tanks. Spontaneous locomotor movements were recorded during concomitant changes in

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16

Ingram, Stephanie Robin. "Ecological implications of flow-mediated scour events for sockeye salmon alevins (Oncorhynchus nerka)." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39932.

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Pacific salmon (Oncorhynchus spp.) life cycles involve completion of several developmental stages including the alevin stage. As alevins, sockeye salmon are found within freshwater gravel redds where they utilise yolk sacs for nutrition, growth and development. Flow mediated scour events pose a common threat of destruction to both redds and fragile alevins during a several month period of winter incubation. However, to date, there is very little research on the impacts of early forced emergence of alevins. Using sockeye salmon (Oncorhynchus nerka) as a model, simulated elevated discharge e

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17

Lusk-Harvey, Sheryl Colene. "Moving towards precaution in the management of Canada's Fraser River sockeye salmon fishery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22863.pdf.

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18

Franklin, Craig E. "Physiological stress, smoltification and seawater adaptation in New Zealand's sockeye and quinnat salmon." Thesis, University of Canterbury. Zoology, 1989. http://hdl.handle.net/10092/5937.

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This study investigated smoltification and seawater adaptability of sockeye (Oncorhynchus nerka) and quinnat salmon (O. tshawytscha). Both species were introduced into New Zealand with an anadromous population of quinnat and a totally freshwater population of sockeye salmon becoming established. The sockeye were found to be capable of successfully adapting to sea water and appeared not to have lost their hypoosmoregulatory ability despite being landlocked for approximately 90 years. The physiological changes associated with smoltification and seawater adaptation were studied and were viewed i

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19

Egorova, Yulia. "Temporal and spatial patterns of outmigration of juvenile sockeye salmon in Rivers Inlet." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59579.

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The sockeye salmon, Oncorhynchus nerka, is economically, ecologically and culturally important for British Columbia and Canada. Currently, ~75% of sockeye populations are declining with a precipitous decline reported in Rivers Inlet (RI). The purpose of this study was to investigate the variability of juvenile sockeye residence and growth in RI during their outmigration to the Pacific Ocean. The point of the marine entry was estimated by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) using otolith elemental composition (Sr:Ca ratio). A significant correlation was found

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20

TerHart, Bert Adrian. "The physical oceanography of British Columbia's inside passage with respect to the return migration of Oncorhynchus nerka." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28996.

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Data from five conductivity-temperature-depth (CTD) surveys collected during 1985 and 1986 in support of project MOIST -Meteorological and Oceanographic Influences on Sockeye Tracks- are used to describe the salient oceanographic features of the waters lying between Vancouver Island and the British Columbia mainland coast. Using these data, four oceanographic regimes are clearly defined on the basis of salinity structure. Temperature-Salinity diagrams are used to discuss water types and mixing ratios in these regimes. Vigorous tidal mixing over shallow sills and/or in narrow channels produc

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21

Hruska, Kimberly Anne. "Factors affecting egg retention and reproductive longevity in spawning female sockeye salmon (Oncorhynchus nerka)." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/26656.

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An individual’s physiological and behavioural response to its environment can have fitness implications. To address hypotheses about the roles of physiology and behaviour on spawning success in sockeye salmon (Oncorhynchus nerka), I conducted experiments in an artificial spawning channel during three spawning seasons. Experiments involved biopsy sampling and behavioural observations; physiology and behaviour were then related to reproductive longevity and egg retention of spawning females. Females living longer on the spawning grounds retained a lower proportion of eggs, indicating that femal

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22

Ajmani, Asha Megan. "The growth and diet composition of sockeye salmon smolts in Rivers Inlet, British Columbia." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39807.

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In the early life history of sockeye salmon smolts, prey availability (quality and quantity) and growth are strongly linked. During this critical period, when ~ 90% of their mortality occurs, they must attain a critical size at which they have sufficient energy stores to survive their long migration with little predation impact, leading to better survival and higher returns. To determine patterns of growth of out-migrating sockeye salmon and to link inter-annual variations in growth to diet and seasonality of the zooplankton community, seine netting and zooplankton tows were conducted in May-J

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23

Huato, Soberanis Leonardo. "A modeling investigation of migratory behavior in fishes : a case study with sockeye salmon." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ61113.pdf.

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24

Minke-Martin, Vanessa. "Thermal behaviour, survival, and reproductive success of adult Gates Creek sockeye salmon (Oncorhynchus nerka)." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58525.

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Water temperature affects every aspect of the physiology of ectothermic fishes. Heterothermic stenotherms, like Pacific salmon, use behavioural thermoregulation to swim into more optimal water temperatures and out of less optimal ones. The range of preferred temperatures can coincide with the thermal optima of important physiological processes. During the reproductive migration, adult Pacific salmon partition limited endogenous energy and aerobic scope for activity to multiple activities, including swimming, recovery from physiological stress, maturation, and immune function. Although much is

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25

O'Neill, Sandra M. "Competitive interactions between juvenile sockeye salmon (Oncorhynchus nerka) and limnetic zone sticklebacks (Gasterosteus aculeatus)." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27176.

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Evidence supporting the hypothesis that competitive interactions occur between juvenile sockeye salmon and limnetic sticklebacks in an oligotrophic lake was obtained by manipulating fish abundance, size and species combinations in limnetic zone enclosures in Kennedy Lake, British Columbia. Sockeye and sticklebacks were stocked at densities within the range known to commonly occur in British Columbia coastal lakes. In all fish-treatment enclosures, fish grazing pressure quickly reduced the abundance of large zooplankters and then maintained zooplankton communities containing primarily nauplii a

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26

Mathias, Karin L. "Growth and survival of juvenile sockeye salmon (Oncorhynchus nerka) in three Northwestern British Columbia lakes - an evaluation of an International Stock Enhancement Program." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0002/MQ59547.pdf.

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27

Abrey, Caryn A. "Variation in the early life history of sockeye salmon (Oncorhynchus nerka) : emergence timing, an ontogenetic shift, and population productivity /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5313.

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28

Foote, Christopher J. "An experimental examination of behavioural isolation between sockeye salmon and kokanee, the anadromous and non-anadromous forms of Oncorhynchus nerka." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/28777.

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The genetic relationship of anadromous (sockeye salmon) and non-anadromous (kokanee) Oncorhynchus nerka was examined in conjunction with the breeding behaviour of the two forms to determine: (1) if there is evidence of genetic divergence between the forms where they spawn sympatrically; (2) if such divergence is associated with significant premating isolation between the forms and; (3) if premating isolation results directly from the size difference between the forms (sockeye are much larger than kokanee at maturity). Both sexes exhibit spawning territoriality; females establish and defend pa

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29

Levy, David Alan. "The selective advantage of diel vertical migration behavior in juvenile sockeye salmon and kokanee (Oncorhynchus nerka)." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/29178.

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The widespread occurrence of diel vertical migration behavior in pelagic aquatic organisms suggests that there is a selective advantage of the behavior compared to a static vertical depth distribution in the water column. Juvenile sockeye salmon (Oncorhynchus nerka) are active diel vertical migrators within pelagic lacustrine habitats, usually migrating over vertical distances covering tens of meters. The migrations are timed such that the animals occupy shallow depths during crepuscular and nocturnal periods, and spend daytime periods relatively deep in the water column. Hydroacoustic survey

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30

Gale, Marika Kirstin. "Influences of temperature on the mortality and physiological impairment of sockeye salmon after simulated capture and release." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39771.

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Pacific salmon experience intense fishing pressure as they commence their freshwater spawning migration, frequently encountering commercial net fisheries and recreational hook and line gear. Untold numbers of fish escape by their own volition or are released by fishers at a range of water temperatures, including those above metabolic and physiological optimums. This thesis focuses on the mortality and sublethal consequences of escape or release from fishing gears by migrating adult Pacific salmon, with a specific focus on how temperature mediates those effects. The role of temperature in the c

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31

Drenner, Stephen Matthew. "Environmental and physiological influences on the behaviour and survival of adult sockeye salmon during their coastal migration." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54068.

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The reproductive migration of anadromous salmon through coastal waters is among the most challenging phases of their life cycle, yet our understanding of the mechanisms underlying this migration is limited. Thus, the objective of this thesis was to develop a better understanding of how environmental conditions and fish physiologic state influence behaviour and survival of homing anadromous salmon in coastal waters. Using a literature synthesis, I identified consistent behaviours across anadromous salmon species and life stages in marine waters including diel patterns and consistent swimming

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32

Mathes, Martin Todd. "Effect of water temperature, timing, physiological condition and lake thermal refugia on success of migrating adult Sockeye salmon." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/7549.

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I related survival of adult Weaver Creek sockeye salmon (Oncorhynchus nerka) to water temperature, migration timing, physiological condition, and lake residence in the lower Fraser River and Harrison System, British Columbia. Late-run sockeye were intercepted in the Harrison River after completing the Fraser River component of their spawning migration. Individual sockeye were tagged with radio or acoustic transmitters (equipped with depth sensor), biopsied for physiological assessment and released. Additional fish were sacrificed to increase sample size and to help evaluate baseline physiology

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33

Kolody, Dale Shawn. "Analysis of Fraser River sockeye salmon coastal migration route variation using Bayesian estimation methods and individual-based modelling." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ38916.pdf.

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34

Roscoe, David William. "Hydro-system related mortality and in-lake behaviour of migrating adult sockeye salmon in the Seton-Anderson Watershed, British Columbia." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12384.

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Pacific salmon carry out long distance spawning migrations from ocean feeding grounds to natal freshwater streams. Because many salmon rivers are dammed, fishways are required to enable individuals to pass through dams and reach upstream spawning areas. However, many fishways are ineffective, preventing or delaying upstream passage, suggesting a need to monitor and evaluate these facilities. I conducted a literature review of studies evaluating the effectiveness of fishways to assess what taxa and life-stages have been studied, the questions asked during evaluation, and how these varied b

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35

Burt, Jennifer Mary. "Influences of parental identity and elevated incubation temperature on the survival, development and early life history traits in sockeye salmon." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/35399.

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Pacific salmon experience intense selection pressures during their early development, and offspring survivorship and fitness traits are influenced by both parental and environmental influences. Given that elevated water temperature can critically impact early development, this thesis focuses on how individual spawners within a population influence the variation in offspring responses to thermal stress. The importance of parentage in assessing temperature effects on fish early life history was first examined in a comprehensive literature review. Only 20% of search-identified studies relating

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36

Maxwell, Marla Rae. "A Bayesian benefit-cost analysis of an experimental fertilization project for sockeye salmon, Oncorhynchus nerka, in Chilko Lake, British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0014/MQ61467.pdf.

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37

Gross, Howard P. "Evaluation of Lake Fertilization as a Tool to Assist in the Recovery of the Snake River Sockeye Salmon (Oncorhynchus Nerka)." DigitalCommons@USU, 1995. https://digitalcommons.usu.edu/etd/6972.

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I analyzed lake fertilization (with nitrogen and phosphorus) as a tool to assist in the recovery of the Snake River sockeye salmon (Oncorhynchus ~) in the oligotrophic Sawtooth Valley Lakes in southcentral Idaho. These analyses involved monitoring, manipulating, and modelling several aspects of the lakes' primary producer, nutrient, and light parameters. In Pettit Lake, I evaluated the effects of metalimnetic and epilimnetic fertilization in 330-m 3 mesocosms. The metalimnetic treatment was equal to or more effective than the epilimnetic treatment in increasing chlorophyll a, phytoplankton bio

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38

Whitney, Charlotte Kathryn. "Variation in embryonic thermal tolerance among populations of sockeye salmon : offspring survival, growth, and hatch timing in response to elevated incubation temperature." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42647.

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Populations of Pacific salmon are genetically and morphologically distinct across large watersheds, and these differences may reflect long-term adaptation to environmental factors such as temperature. While climate warming is predicted to affect sockeye salmon, it is likely that such impacts will happen differentially across life stages and populations. Given that selective pressures during early development plays an important role in lifetime fitness, and that elevated water temperatures can critically affect embryo success, this thesis focuses on inter-population differences in offspring res

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39

Collins, Alison Laureen. "Acoustic tagging effects on juvenile sockeye salmon swimming performance, growth, post-surgical wound healing, survival, and metabolic rate in freshwater and saltwater." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/40370.

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Juvenile Pacific salmon make large-scale migrations from natal freshwater rearing grounds to the Northern Pacific Ocean. To properly manage these species an understanding of their migration patterns and survival is necessary. Acoustic telemetry is an ideal tool used to study the migratory survival and behavior of juvenile salmonids. However, the assumption that tagged individuals behave similarly to non-tagged conspecifics in the freshwater and saltwater phases of their outmigration need to be validated as part of large-scale telemetry studies. Consequently, a laboratory-based experiment

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40

Baumann, Michael. "Ecosystem effects on harvested populations : lower trophic level dynamics in the northeast pacific and its implications on sockeye salmon (oncorhynchus nerka) survival." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34510.pdf.

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41

Nadeau, Patrick Sylvain. "Parental contributions to the early life history traits of juvenile sockeye salmon (Oncorhynchus nerka) : the roles of spawner identity and migratory experience." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31781.

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Pacific salmon (Oncorhynchus spp.) undergo arduous upstream migrations In order to spawn. To date, much scientific attention has focused on why certain migrants succeed in reaching their destination while others die trying. Less is known about how 'successful' spawners differ in the quality of the progeny they produce. Using sockeye salmon O. nerka (Walbaum) as a model, two artificial fertilization experiments were conducted to investigate the relationships between individual salmon and their offspring. In the first experiment, I evaluated survival, size, and burst swimming ability in fry of k

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42

Robinson, Kendra Alexis. "Physiological, behavioural and survival effects of assisting the post-capture ventilation of adult sockeye salmon exposed to capture and release in fresh water." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/43999.

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Fish that are released from fisheries capture exhibit physiological and behavioural changes that can result in mortality. The ability to release fish that do not experience subsequent fitness consequences is fundamental to fisheries conservation and management tools that mandate live release. Thus, researchers have evaluated methods that fishers can use to reduce the potential for negative capture-related effects. Indeed, modifying capture and landing practices can limit the severity of the physiological and behavioural impairments. Moreover, release techniques that enhance the metabolic recov

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43

Doson, Coll Yago. "Stable isotope analysis of Rivers Inlet sockeye salmon (Oncorhynchus nerka) : investigating the contribution of environmental conditions in the high seas to British Columbia population declines." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/53245.

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Sockeye salmon (Oncorhynchus nerka) populations in BC have undergone varying degrees of decline coinciding with a shift to a warmer phase of the Pacific Decadal Oscillation (PDO) in 1977. The PDO, and other climate cycles, have been shown to significantly affect the physical and biological characteristics of the North East Pacific Ocean. Changes in ocean productivity have implications for pelagic food webs and may cause shifts in the abundance of potential prey for sockeye salmon, impacting their long-term production patterns. We investigated the coupling of ocean conditions and population flu

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44

Pon, Lucas Benjamin. "The role of fish physiology, behaviour, and water discharge on the attraction and passage of adult sockeye salmon (Oncorhynchus nerka) at the Seton River dam fishway, British Columbia." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/726.

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In many rivers, dams have interrupted the connectivity of migration routes for fish. While fishways can provide access between downstream and upstream habitats, it is important that passage can occur with minimal delay, energy expenditure, and physiological stress. The research presented here is based on investigations into fishway attraction and passage for the Gates Creek sockeye salmon (Oncorhynchus nerka, Walbaum) stock at the Seton River dam in British Columbia. The first part of this thesis examined the effect of changes in water discharge from the dam on the relationship between the

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45

Alexander, Clint Andre Dertschal. "Contradictory data and the application of the precautionary approach, a case study for setting escapement targets for the Early Stuart run of Fraser River sockeye salmon, British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ51279.pdf.

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46

Chiasson, Alyre. "Rubidium and cesium as indicators of diet in freshwater fish with particular emphasis on overlap in diet between juvenile sockeye salmon (Oncorhynchus nerka), and threespine stickleback (Gasterosteus aculeatus)." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27042.

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Body burdens of rubidium and cesium were used to assess overlap in diets of sockeye salmon (Oncorhynchus nerka) and threespine stickleback (Gasterosteus aculeatus) in Kennedy, Cultus, and Great Central Lakes, British Columbia and Lake Aleknagik, Alaska, lakes in which competition between sockeye salmon and threespine stickleback has been suggested. Differences in uptake patterns of Cs in juvenile . coho (Oncorhynchus kisutch) and threespine stickleback were attributable to differences in diet and not physiology. Tissue concentrations of Rb and Cs were examined in threespine stickleback and ju

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47

Middleton, Collin Thomas. "The cumulative effects of physiology, temperature, and natal water cues on the migration behaviour and survival of adult sockeye salmon during passage through the Seton River hydroelectric system, British Columbia." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58376.

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Upriver migrating adult Pacific salmon home to natal sites following natal water cues while also undergoing a suite of physiological changes to prepare for spawning. Migrants can encounter myriad environmental conditions that are physiologically and energetically challenging throughout these journeys. Many freshwater migration corridors have also been converted into hydroelectric systems (hydrosystems) that can change the composition of flows such that the availability and concentration of natal water cues can vary substantially. How such flow composition changes affect migration behaviour has

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48

Lake, Randal Gary. "Activity and behaviour in spawning sockeye salmon." Thesis, 1999. http://hdl.handle.net/2429/9699.

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Total energy expenditures and muscle activity have been measured in spawning salmon but behaviour specific energy-use has never been been measured directly. This research used electromyogram (EMG) telemetry, combined with behaviour observations to assess activity levels and estimate relative energy use during spawning in sockeye salmon, Oncorhynchus nerka. My main objectives were to: assess the ability of EMG transmitter technology to discriminate between the rate of muscle activity during short duration specific behaviours and general activity, and; use these data to compare the total

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49

Plate, Elmar Maria. "Olfactory imprinting in sockeye salmon (Oncorhynchus nerka)." Thesis, 2001. https://dspace.library.uvic.ca//handle/1828/9638.

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In the following study, I tried to link hormonal background conditions to successful olfactory imprinting in sockeye salmon by employing behavioural, endocrinological and electrophysio logical experiments. In the initial experiments, sockeye salmon were exposed to potential imprinting odorants, with or without additional treatment with thyroid hormones, during several juvenile stages between fertilization and beyond the PST. After two years of rearing, these fish were tested for behavioural responses to test odorants in two behavioural arenas. Neither immature nor mature fish reacted behavi

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50

Dat, Claire Germaine. "Compass orientation in migrating Fraser River sockeye salmon." Thesis, 1994. http://hdl.handle.net/2429/5292.

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Three numerical models were used to investigate whether compass orientation is an effective guidance mechanism for sockeye salmon migrating to the Fraser River from the open ocean. Daily surface ocean currents, simulated by the Ocean Surface Currents Simulations (OSCURS) model, were used in each model to test the influence of currents on the return oceanic migration of the Fraser River sockeye salmon. The high seas tagging and coastal recovery data of the Fraser River sockeye salmon were used for the migration simulations. The Fraser River sockeye salmon were shown to move in a northeast

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